search for: arrowtheory

Simon Burton <simon at arrowtheory.com> writes: > Hi, > > I've read over the "LLVM Language Reference Manual" > a few times, and writing some ll code, but i'm stuck at > a very basic point. How to decrement a counter variable ? > > int %count(int %n) { > EntryBlock: > %cond = seteq...

...VM library ? I have a mild C++ allergy that I don't wish to aggravate. > The later is simpler and relieves you > from some nasty burdens. Yes, i'm finding it quite hairy! :) Simon. -- Simon Burton, B.Sc. Licensed PO Box 8066 ANU Canberra 2601 Australia Ph. 61 02 6249 6940 http://arrowtheory.com

On Fri, 5 May 2006, Simon Burton wrote: > This leads me to my next question: as I make more and more functions > with the EE, it slows down. I am re-using the Module, ExistingModuleProvider, > and ExecutionEngine, and pumping the parser like so: > M = ParseAssemblyString(AsmString, M); > ISTM that there should be a way of creating multiple modules/EEs but I ran > into trouble

...*M ) M->getNamedFunction(name); EE->getPointerToFunction It feels like there is a linear name lookup going on somewhere. (will be able to do report more thorough timings later) Simon. -- Simon Burton, B.Sc. Licensed PO Box 8066 ANU Canberra 2601 Australia Ph. 61 02 6249 6940 http://arrowtheory.com

On Fri, 5 May 2006 16:43:13 +1000 Simon Burton <simon at arrowtheory.com> wrote: > > It slows in the construction phase, so one of these calls: > M = ParseAssemblyString(AsmString, M); > verifyModule( *M ) > M->getNamedFunction(name); > EE->getPointerToFunction > > It feels like there is a linear name lookup going on s...

...friends ? Do I use lli ? I'd like to directly create executable code that i can stick in memory somewhere and jump into (call). (I'm looking to use llvm in a BSD licensed project). Simon. -- Simon Burton, B.Sc. Licensed PO Box 8066 ANU Canberra 2601 Australia Ph. 61 02 6249 6940 http://arrowtheory.com

...gt; release or cvs? CVS. >From what I remember, this is a bug in debian libc: some floating point flags are set incorrectly causing SIGFPE. Can't find the bug report ATM. Thanks, Simon. -- Simon Burton, B.Sc. Licensed PO Box 8066 ANU Canberra 2601 Australia Ph. 61 02 6249 6940 http://arrowtheory.com

I also suffer from the same C++ allergy notably shoot in foot with dynamic grammers and overloading.. creates gasey code feeling..especially in the backend.. :)cheers! Simon Burton <simon at arrowtheory.com> wrote: On Sat, 15 Apr 2006 07:47:00 +0200 Oscar Fuentes wrote: > > BTW, Simon, is there a reason for writing LLVM assembler and not > generating LLVM code directly? You mean write C++ code that calls the LLVM library ? I have a mild C++ allergy that I don't wish to aggravat...

...1 = (int (*)(int))EE->getPointerToFunction(F); std::cout << "Got:" << add1(55) << "\n"; // <----------- Bombs here <--------------- return 0; } -- Simon Burton, B.Sc. Licensed PO Box 8066 ANU Canberra 2601 Australia Ph. 61 02 6249 6940 http://arrowtheory.com

...uot;h\2245\b\002" > > What happens when you execute your function the same way the Fibonacci > example does? (See examples/Fibonacci/fibonacci.cpp line 112). That works OK. Simon. -- Simon Burton, B.Sc. Licensed PO Box 8066 ANU Canberra 2601 Australia Ph. 61 02 6249 6940 http://arrowtheory.com

...s that the right way ? Also the above code is invalid: Entry block to function must not have predecessors! label %EntryBlock Broken module found, compilation aborted! thanks for any hints, Simon. -- Simon Burton, B.Sc. Licensed PO Box 8066 ANU Canberra 2601 Australia Ph. 61 02 6249 6940 http://arrowtheory.com

...What is LLVM doing with my code ? Does it generate SSE2 instructions ? thanks! Simon. double sum_d(double*mem,int n) { double val=0.0; while(n) { val += *mem; mem++; n--; } return val; } -- Simon Burton, B.Sc. Licensed PO Box 8066 ANU Canberra 2601 Australia Ph. 61 02 6249 6940 http://arrowtheory.com

...= 0x864c000 --- SIGSEGV (Segmentation fault) @ 0 (0) --- pipe([4, 5]) = 0 futex(0xb7ecf900, FUTEX_WAIT, 2, NULL <unfinished ...> dump.bc attached. Simon. -- Simon Burton, B.Sc. Licensed PO Box 8066 ANU Canberra 2601 Australia Ph. 61 02 6249 6940 http://arrowtheory.com -------------- next part -------------- A non-text attachment was scrubbed... Name: dump.bc Type: application/octet-stream Size: 22744 bytes Desc: not available URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20060621/bd4b9001/attachment.obj>

On Thu, 13 Apr 2006 18:07:42 +0200 Oscar Fuentes <oscarfv at telefonica.net> wrote: > > Simon Burton <simon at arrowtheory.com> writes: > > > I'm trying to take assembly and create machine code I can execute. > > How close am I ? > > Your test case is not complete. Besides, which version of llvm are you > using? What are the commands for compiling and linking your test case? > How it...

On Tue, 20 Jun 2006, Chris Lattner wrote: > On Wed, 21 Jun 2006, Simon Burton wrote: >> This from the output: >> >> 24620 x86-emitter - Number of machine instructions emitted >> >> (i had to write a dummy main function to get this to work) >> >> Is this really the number of bytes of machine code ? > Yes. To be specific, this is the

...in (anonymous namespace)::X86DAGToDAGISel::Select(llvm::SDOperand&, llvm::SDOperand) (this=0x822d660, Result=@0xbf801098, N={Val = 0x82544d0, ResNo = 0}) at X86ISelDAGToDAG.cpp:835 etc.... -- Simon Burton, B.Sc. Licensed PO Box 8066 ANU Canberra 2601 Australia Ph. 61 02 6249 6940 http://arrowtheory.com -------------- next part -------------- A non-text attachment was scrubbed... Name: dump.ll Type: application/octet-stream Size: 68038 bytes Desc: not available URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20060505/faf9bba6/attachment.obj>

Simon Burton <simon at arrowtheory.com> writes: > I'm trying to take assembly and create machine code I can execute. > How close am I ? Your test case is not complete. Besides, which version of llvm are you using? What are the commands for compiling and linking your test case? How it bombs? Do you #include "llvm...

Simon Burton <simon at arrowtheory.com> writes: > I'm using llvm CVS, and manage to compile/link OK. Yes I include JIT.h. > The program segfaults when it gets to calling the function pointer. > >>From the Makefile: > > llvmjit: llvmjit.o > g++ llvmjit.o /home//users//simonb//lib/LLVMAsmParser.o /home...

Simon Burton <simon at arrowtheory.com> writes: >> There are several possibilities here: either add1 is assigned a NULL >> pointer, or LLVM was unable to use the JIT and generates bytecode >> instead of native code, or invalid native code was generated >> (unlikely). > > Well, it's not NULL: &gt...

On Wed, 19 Apr 2006 19:28:34 +0100 Simon Burton <simon at arrowtheory.com> wrote: > > >From what I remember, this is a bug in debian libc: > some floating point flags are set incorrectly causing SIGFPE. > Can't find the bug report ATM. Oh, it just showed up on numpy-discussion: http://sources.redhat.com/bugzilla/show_bug.cgi?id=10 "&quo...